If you call CQ at that speed you’ll get someone answer at that speed. Just go for it. First one I did I actually had a couple of drinks first :)
I’ve been meaning to try one of the ISS SSTV events on 2m but haven’t got around to it yet. Looks like fun
I encourage everyone to give SSTV a shot. My antenna is just a "hamstick dipole" and it's maybe 13 feet in the air, but like I said I've had successful 20m contacts as far away as Quebec.